Four versions of a very light theme based on the T-Ish pack of Tmilovan (http://www.gnome-look.org/content/show.php/T-ish+Pack?content=30859), with new square buttons.
Of course, it may be used with any other GTK theme.
I tried to make something a bit different from Mac style. The aim was to have something "eye candy". I'd really like to have some comment about the button symbols (I tried to make something easy to understand without imitating the current themes).